JP2009059502A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device capable of illuminating on a dining table with an appropriate lighting condition for respective usage in the case of using the dining table for dining use or in the case of using for studying use. <P>SOLUTION: The lighting device 1 is provided with a lower side reflecting plate 2 to reflect downward, a first light source 4 which is arranged at the lower part of the lower side reflecting plate and generates reflected light by the lower side reflecting plate, an upper side reflecting plate 3 arranged above the lower side reflecting plate 2, a second light source 5 which is arranged between these lower side reflecting plate 2 and the upper side reflecting plate 3 and generates reflected light by the upper side reflecting plate 3, and a lighting status switching means 12. The lighting status switching means 12 can switch over between a first lighting state in which only the first light source 4 is lighted and a second lighting state in which the first lighting source 4 is lighted at an intensity lower than the intensity of the first light source 4 in the first lighting state and the second light source 5 is also lighted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting device used for lighting a dining room or the like.

  In recent years, the idea of using a dining room as a learning space for children at home to improve the learning effect has been advocated, and there are many cases in which children learn in the dining room.

The lighting conditions required on the dining table and the lighting conditions required on the learning desk or the learning space differ as follows, and the following lamps are used for these lightings, for example.
The lighting conditions on the dining table are that dishes, tableware, colors and shadows look beautiful. An incandescent lamp, a dichroic halogen lamp, or the like is used to satisfy this illumination condition.
The lighting conditions on the learning desk and the learning space are that there is little blurring and the like, and the cause of eye fatigue such as flicker is eliminated. In order to satisfy this lighting condition, a fluorescent lamp or a lighting fixture that eliminates flicker as much as possible is used.

  However, when the dining room is used as a learning space for children, when the above-mentioned incandescent lamp or dichroic halogen lamp is used for lighting on the dining table, the glossiness and shadow of the object to be illuminated are emphasized. , Hand-cranking and the like occur, making the lighting inappropriate for learning.

  An object of the present invention is to provide an illuminating device capable of illuminating a dining table on illumination conditions suitable for each use regardless of whether the dining table is used for dining or for learning.

  The illumination device of the present invention includes a lower reflecting plate that reflects downward, a first light source that is disposed below the lower reflecting plate and generates reflected light on the lower reflecting plate, and above the lower reflecting plate. And an upper reflecting plate disposed between the lower reflecting plate and the upper reflecting plate, and a second light source that generates reflected light by the upper reflecting plate. Further, the first lighting state in which only the first light source is turned on, and the first light source is turned on and the second light source is turned on at a light intensity lower than the light intensity of the first light source in the first lighting state. A lighting state switching means capable of switching the lighting state between the two lighting states; When the lighting device having this configuration is used for lighting on the dining table, when the lighting state switching means is in the first lighting state in which only the first light source is turned on, the radiated light of the first light source is converted into the lower reflector. The dining table is irradiated with the reflected light reflected in step 1. For this reason, shadows are generated in the dishes and dishes on the dining table. When the second lighting state is set by the lighting state switching means, the first light source is turned on at a light intensity lower than that of the first light source in the first lighting state, and the second light source is also turned on. For this reason, the light reflected from the lower reflector and the light reflected from the lower reflector and the light reflected from the upper reflector are diffused on the dining table. Irradiation is not necessary, and it is suitable as learning light. As a result, whether the dining table is used for meals or for learning, the dining table can be illuminated on lighting conditions suitable for each use.

  In this invention, a semi-transmission plate may be interposed between the upper reflection plate and the lower reflection plate, and the second light source may be disposed above the semi-transmission plate. The semi-transmissive plate is a diffusion glass plate or the like. In the case of the configuration in which the semi-transmission plate is provided in this way, in the second lighting state, a part of the reflected light from the upper reflection plate is transmitted through the semi-transmission plate and diffused, so that it is irradiated onto the dining table. Light is diffused more, and the lighting effect for learning is enhanced.

In the present invention, the lower reflecting plate may be formed in a concave curved surface that is concave downward, and the upper reflecting plate may be formed in a convex curved surface that is convex downward.
When the lower reflecting plate is formed in a concave curved surface that is concave downward, the directivity of the reflected light reflected by the lower reflecting plate on the dining table is increased in the first lighting state, and more dining It can be set as illumination suitable for use.
In addition, when the upper reflector is formed in a convex curved surface that protrudes downward, the reflected light reflected by the upper reflector is more easily diffused in the second lighting state, and is more suitable for learning. It can be.

  The illumination device of the present invention includes a lower reflecting plate that reflects downward, a first light source that is disposed below the lower reflecting plate and generates reflected light on the lower reflecting plate, and an upper side of the lower reflecting plate. An upper reflector disposed in the first reflector, a second light source that is disposed between the lower reflector and the upper reflector and generates reflected light on the upper reflector, and a first lighting state in which only the first light source is lit. And a lighting state switch capable of switching the lighting state between a second lighting state in which the first light source is turned on and the second light source is turned on at a light intensity lower than that of the first light source in the first lighting state. Therefore, it is possible to illuminate the dining table under lighting conditions suitable for each use, regardless of whether the dining table is used for meals or used for learning.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a side view of a schematic configuration of the illumination device of this embodiment. The lighting device 1 is installed in a dining room and illuminates a dining table. The lighting device 1 includes a lower reflecting plate 2 as a reflecting plate and an upper reflecting plate 3 disposed above the lower reflecting plate 2. Prepare. The lower reflecting plate 2 is a member having a substantially arc-shaped cross section composed of a part of the peripheral region of the cylindrical body, and a concave curved surface 2a on one side which is a concave portion thereof is formed on the reflecting surface. The lower reflecting plate 2 is arranged so that the concave curved surface 2a faces downward. The upper reflecting plate 3 is a member having a substantially arc-shaped cross section composed of a part of the peripheral region of the cylindrical body, and a convex curved surface 3a on one side that is convex is formed on the reflecting surface. The upper reflector 3 is arranged with its longitudinal direction aligned with the longitudinal direction of the lower reflector 2 so that the convex curved surface 3a faces downward.

  A light source support 6 that supports the first and second light sources 4 and 5 is disposed between the lower reflector 2 and the upper reflector 3. On the upper surface of the light source support 6, a plurality of hanging tool insertion pipes 7 project from each other in the length direction, and the upper reflector 3 is connected to the light source support 6 through the pipes 7. Is done. The light source support 6 is a case in which an illumination circuit 10 for lighting the light sources 4 and 5 is incorporated, and has a box shape extending in the longitudinal direction of the upper and lower reflectors 2 and 3. The cross-sectional shape of the upper surface of the light source support 6 is a shape in which the pair of inclined surface portions 6a form an inverted V shape. The upper surface of the light source support 6 is a reflective surface. The light source support 6 and the lower reflector 2 are coupled via a coupler (not shown) or coupled via the light source 4.

A semi-transmissive plate 8 is interposed between the upper reflective plate 3 and the lower reflective plate 2, and the second light source 5 is disposed above the semi-transmissive plate 8. The semi-transmissive plate 8 is made of a flat diffused glass or the like, is provided extending from both sides of the light source support 6 to the side, and is attached to the light source support 6.
As shown in part in a perspective view in FIG. 2, the lighting device 1 has a configuration in which the lower reflector 2, the upper reflector 3, and the semi-transmissive plate 8 are stacked in three upper and lower layers. A hanging tool 9 inserted through the tool insertion pipe 7 is used in a pendant form suspended from the ceiling. One of the hanging tools 9 is also used as a power cord, and this power cord is connected to the lighting circuit 10. In this embodiment, two hanging tools 9 are provided. However, when the overall planar shape of the lighting device 1 is a circular shape, a square shape, or the like, the number may be one.

  The first light source 4 is mainly used as lighting for dining, and includes an LED such as a chip LED that emits warm light of about 2800 to 3000 k. The light source 4 is attached to a socket (not shown) of the light source support 6 so as to protrude from the lower surface of the light source support 6. The lower reflection plate 2 has an opening (not shown) for insertion of the light source 4, and the first light source 4 is inserted through the opening of the lower reflection plate 2, and at least the light emitting portion thereof is inserted. It is located below the lower reflector 2. Two first light sources 4 are provided side by side in the width direction of the lower reflector 2. When the first light source 4 is a point light source, for example, a plurality of the first light sources 4 may be arranged in the length direction of the lower reflector 2 and arranged in two rows. When the 1st light source 4 is a line light source, it arrange | positions so that it may extend in the length direction of the lower reflector 2. As shown in FIG. These first light sources 4 reflect the radiated light by the concave curved surface 2a, which is the reflective surface of the lower reflector 2, to generate reflected light.

  The second light source 5 is used as illumination for learning, and includes an LED such as a chip LED that emits whitish light of about 3500 to 4200k. The light source 5 is provided on the upper surface of the light source support 6. That is, the second light source 5 is disposed between the lower reflector 2 and the upper reflector 3, and the radiated light is reflected by the convex curved surface 3 a that is the reflecting surface of the upper reflector 3 to generate reflected light. . Two second light sources 5 are provided side by side so as to be positioned on the inclined surface portions 6 a on both sides of the light source support 6. These second light sources 5 are attached to sockets (not shown) provided on the light source support 6. When the second light source 5 is a point light source, for example, a plurality of the light sources may be arranged in two rows in the length direction of the lower reflector 2. When the second light source 5 is a line light source, it is arranged so as to extend in the length direction of the light source support 6.

FIG. 3 is a block diagram showing the illumination circuit 10. The illumination circuit 10 here includes a power supply circuit and a control circuit. Although the illustration of the power supply circuit of the illumination circuit 10 is omitted, for example, when each of the light sources 4 and 5 is an LED such as a chip LED, it has a converter that converts a commercial AC power source into a DC power source. It is lit with DC current.
As a control circuit of the illumination circuit 10, a receiving unit 11 that receives various command signals wirelessly transmitted from the remote controller 20 and a lighting state that switches the lighting states of the light sources 4 and 5 based on the received predetermined command signals. It has switching means 12. The lighting state switching means 12 switches the lighting state between the first lighting state and the second lighting state.
The first lighting state is a lighting state in which only the first light source 4 is lit. In the second lighting state, the first light source 4 is turned on at a light intensity lower than the light intensity of the first light source 4 in the first lighting state, for example, about 50%, and the second light source 5 is turned on. Lights up. In this case, the first lighting state is a lighting for dining, and the second lighting state is a lighting for learning.

  4 and 5 are explanatory diagrams showing the lighting states of the lighting device 1. When the lighting device 1 is used for dining, a command signal for setting the first lighting state is wirelessly transmitted from the remote controller 20 to the lighting circuit 10 as shown in FIG. Upon receiving this command signal, the lighting state switching means 12 of the illumination circuit 10 sets the first lighting state in which only the first light source 4 is lit. In this lighting state, the radiation light of the first light source 4 composed of the LED that emits warm light of about 2800 to 3000 k is reflected only by the lower reflector 4 and irradiated onto the dining table. In other words, the dining table can be irradiated with warm light with high directivity. As a result, the dishes and dishes on the dining table are shiny and shaded, and the dishes look delicious.

  In this case, since the lower reflecting plate 2 has a concave curved surface 2a which is concave downward as a reflecting surface, the directivity of the reflected light reflected by the lower reflecting plate 2 on the dining table is increased. The lighting can be more suitable for dining.

  When the lighting device 1 is used for learning, a command signal for setting the second lighting state is wirelessly transmitted from the remote controller 20 to the lighting circuit 10 as shown in FIG. Upon receiving this command signal, the lighting state switching means 12 of the lighting circuit 10 has the first light source 4 at a light intensity (for example, 50%) lower than the light intensity of the first light source 4 in the first lighting state (for dining). And the second light source 5 is also turned on. That is, in this lighting state, the light emitted from the first light source 4 composed of an LED that emits warm light of about 2800 to 3000 k is weakened, and the light reflected by the lower reflector 4 is about 3500 to 4200 k. The dining table is irradiated with the light emitted from the second light source 5 made of an LED that emits whitish light and the light reflected by the upper reflector 5. Therefore, since the light of the LED driven by direct current drive without flicker can be diffused and irradiated on the dining table, it is suitable as illumination for learning without hand darkening. In addition, since a part of the reflected light from the upper reflecting plate 5 is transmitted through the semi-transmissive plate 8 and diffused, the light irradiated on the dining table is further diffused, and the lighting effect for learning is used. Becomes higher.

  In this case, since the upper reflecting plate 3 is formed with a convex curved surface 3a that protrudes downward as a reflecting surface, the reflected light reflected by the upper reflecting plate 3 is more easily diffused and is more suitable for learning. It can be lighting.

It is a side view which shows schematic structure of the illuminating device concerning one Embodiment of this invention. It is a fragmentary perspective view of the illumination device. It is a block diagram which shows the structure of the illumination circuit in the illumination device. It is explanatory drawing which shows the state which turned on the lighting apparatus for dining. It is explanatory drawing which shows the state which turned on the lighting apparatus for learning.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Illuminating device 2 ... Lower reflector 3 ... Upper reflector 4 ... 1st light source 5 ... 2nd light source 8 ... Semi-transmissive plate 12 ... Lighting state switching means

Claims (3)

  A lower reflector that reflects downward, a first light source that is disposed below the lower reflector and generates reflected light on the lower reflector, and an upper reflector that is disposed above the lower reflector A second light source disposed between the lower reflector and the upper reflector and generating reflected light at the upper reflector, a first lighting state in which only the first light source is lit, and a first lighting state A lighting device comprising: a lighting state switching means capable of switching a lighting state between a second lighting state in which the first light source is turned on at a light intensity lower than that of the first light source and the second light source is turned on.   2. The illumination device according to claim 1, wherein a semi-transmissive plate is interposed between the upper reflective plate and the lower reflective plate, and the second light source is disposed above the semi-transmissive plate.   3. The lighting device according to claim 1, wherein the lower reflector is formed in a concave curved surface that is concave downward, and the upper reflector is formed in a convex curved surface that is convex downward.

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